设计一个窗口，其中包含一个文本区、两个复选框和3个横向滑动条，其中滑动条用来调整R、G、B三色的分量从0~255变化；两个复选框分别用于设定吧滑动条调出的颜色应用于文本区的前景色还是背景色。-Design a window that contains a text area, two checkboxes and three transverse slider, wherein the slider to adjust the R, G, B three color components change　0 to 255　both boxes were used setting the slider bar to bring up the color is applied to the foreground or the background color of the text area.